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Finding the Fourth Proportional to 34.26, 51.41 and 31.97

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Solution

The fourth proportional to 34.26, 51.41 and 31.97 is: 47.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    34.26 : 51.41 = 31.97 : x
  2. Step 2: Convert to fraction form
    34.26/51.41 = 31.97/x
  3. Step 3: Cross multiply
    34.26x = 51.41 × 31.97
  4. Step 4: Simplify right side
    34.26x = 1,643.29
  5. Step 5: Solve for x
    x = 1,643.29/34.26
  6. Step 6: Final answer
    x = 47.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.